Cat litter box



FIG. 1 is a perspective view taken from the top, front and right side of a cat litter box showing my new design, the left side being a mirror image of the right side shown; and,

FIG. 2 is a perspective view taken from the top, rear and right side thereof.

The broken line representation of roof shingles, clap board, windows and shrubbery in FIGS. 1 and 2 is for purposes of illustration only and forms no part of the claimed design. 

The ornamental design for a cat litter box, as shown and described. 